Performance Software

Rennsport Systems offers GIAC performance chips & software (flash) for all Porsches built from 1990-onward. Performance enhancing software requires the use of 91 octane (pump) or better. We also make custom racing chips for racing gasoline applications that allow the maximum HP available from software.

964 chips

12-15 HP program depending on fuel and exhaust modifications.

Chips programmed to European spec, CUP level, RS, and beyond.

Here are some DMEs supported:

0.261.200.450 $450

0.261.299.473 $450

0.261.200.474 $450

0.261.200.483 $450

993 Software

12-15+ HP program depending on fuel

0.261.203.163 (‘95) $ 500

0.261.203.674 (‘95) $ 500

0.261.203.675 (‘95) w/Immobilizer $ 500

0.261.203.677 (‘95) Euro $ 500

0.261.203.679 (‘95) Euro $ 500

0.261.204.376 (’97) $ 995

0.261.204.649 (’98) $ 995

’95 993 chips are socketed and thus easily replaceable. The ‘97-’98 993 OBDII cars have soldered-in chips so the DME must be sent in to Rennsport Systems to have the new software installed.

These DME’s are specific to your car since the anti-theft immobilizer is programmed into the Motronic ECU. The Immobilizer (Drive Block) can be disabled in software if desired.

We are able to re-program all 993 (except ’96 DME’s), 993 Twin-Turbo’s. Please read below to see others are available. Listed are US and non-US models that we support. ’96 993 & Twin-Turbo’s must use a ’97 DME to re-program these cars since those ECU’s contain non-reprogrammable chipsets (PROM). Later ECU’s use EEPROM’s which can be erased and re-written.

993 Twin-Turbo

0.261.204.377 (‘97) $ 2500

Choose from Turbo S-package 430 HP, Super-S 480 HP or 520 HP. These are 100% software controlled, however K14/16 Hybrid or K24 turbochargers and 5 bar FPR are needed for the top two power levels.

Note – oil cooling system must be upgraded with the addition of a left-side oil cooler.

997 Twin-Turbo & GT-2

986/987 Boxster & Boxster S- Cayman (all models)

We can update US programming to real European RS specs (the cars we did not get over here) or beyond. We leave the stock rev limiter alone given the weakness in the OEM rod bolts unless you install ARP bolts or aftermarket rods such as Pauter or Carrillo rods.

Here are some unsolicited customer comments:

993 Software

Loren B @ Flying Lizard Motorsports wrote:

“Just finished up a track day at Thunder Hill this weekend. WHAT DID YOU DO TO THE ECU, this car is so much more alive and has much better mid range etc. HUGE difference and power comes on earlier and smoother. With our current gears i would always have a hard time exiting 10 and 11 to the essex and now with the power being more usable the car moves threw there. Overall it feels like a different car and can’t tell you how nice it is to not press the damn remote to fire her up. Thanks so so much and really happy we did the tune with you.”

Jordan M, San Diego wrote:

“I just want to say that I have this upgrade from Steve and couldn’t be happier. The drivability of the car no matter how you characterize it is vastly improved (that’s my 1st hand evaluation of my car in my use case). I recommend it and would do it again in a heartbeat.”

Ben In Venice Beach wrote:

“I have to say and this is subjective, but the car felt completely different. It revved smoother, felt like it had more power throughout the range in any given gear. It might not be too strong to say the car has been transformed. I believe the graphs show to expect maybe 10-12hp and similar gains in torque. It felt at least that strong. The dead spot I felt sometimes is gone. Steve uses the programming GIAC developed and adds his own special code too (if I’m not mistaken). He also removed the immobilizer and my next step will be too jump the starter relay so I can avoid using the fob completely.”

Call us!

503 244 0990

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